Magnetic resonance imaging method and device for reducing image

Details Magnetic resonance imaging method and device for reducing image Magnetic resonance imaging method and device for reducing image

1991-12-20

1993-11-16

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324309, G01R 3320

Patent

active

052627250

ABSTRACT:
In magnetic resonance imaging various error sources lead to deterioration of the image quality. One class of errors is formed by errors which vary only slowly over the time required to sample a data line but vary substantially over the time required to acquire data for the complete magnetic resonance image. These error sources are, for example external magnetic fields, motion due to respiration, drift in amplifiers or drift phenomena in permanent magnets due to temperature influences. It is proposed to utilize mutually intersecting data lines in the Fourier domain so as to estimate these error sources and to use these estimates to correct the data sets obtained before execution of image reconstruction.

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patent: 4979512 (1990-12-01), Heubes
patent: 5087880 (1992-02-01), Bruder et al.
patent: 5126673 (1992-06-01), Henning
"An Algorithm for Translational Motion Artifact Correction", Hedley et al. SMRM, Aug. 18-24, 1990, p. 561.

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